| 坚硬顶板塌陷机理探讨 |
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| 引用本文： | 胡守平,李纯宝. 坚硬顶板塌陷机理探讨[J]. 山东煤炭科技, 2008, 0(6) |
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| 作者姓名： | 胡守平 李纯宝 |
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| 作者单位： | 同煤集团大唐塔山煤矿有限公司,山西,大同,037001;山东龙口矿业集团经济运行处,山东,龙口,265700 |
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| 摘 要： | 大同"两硬"浅埋深煤层开采地表塌陷具有整体一次性切冒特征,其特点是具有明显的滞后性和突发性,塌陷过程时间短、破坏性大、难以预测预防。通过对覆岩活动的力学分析,得出坚硬顶板塌陷原因,在采空区部分煤柱丧失承载能力后,上部覆岩将围岩应力转移到周边仍具有一定承载力的尚未完全失效的煤柱上,使相邻煤柱破坏,产生"多米诺骨牌"连锁破坏效应,造成顶板塌陷。
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| 关 键 词： | 坚硬顶板 破坏 煤柱 塌陷 |
Study on the Collapse Mechanism of the Hard Roof Rocks |
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| Hu Shouping,LI Chunbao. Study on the Collapse Mechanism of the Hard Roof Rocks[J]. Shandong Coal Science and Technology, 2008, 0(6) |
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| Authors: | Hu Shouping LI Chunbao |
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| Affiliation: | Hu Shou-ping1,LI Chun-bao2 (1.Datang Tashan Coal Mine Co.Ltd.of Tongmei Group,Shangxi Datong 037001 2.Economy runs officee of Longkou Mineral Industry Group Company,265700) |
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| Abstract: | The collapse of the hard roof rocks was characterized by its sudden and entire breakage and falling during the mining of the shallow-thick coal seams in Datong district.In this paper,structural mechanics methods was used to study the collapse mechanism of the hard roof rocks.The results showed that when some of the coal pillars lost their load bearing capacity,the pressure of the surronding rocks would be transferred to the left ones which were also to be damaged due to the extra load,and this would cause a... |
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| Keywords: | Hard roof rocks Coal pillars Failure Collapse |
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